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Secondary Battery And Method For Manufacturing The Same

a second battery and manufacturing method technology, applied in sustainable manufacturing/processing, cell components, wound/folded electrode electrodes, etc., can solve the problem of lowering the battery capacity, achieve the effect of reducing the electric resistance, ensuring the battery capacity, and minimizing the formation of the non-coating par

Active Publication Date: 2020-09-17
LG ENERGY SOLUTION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes a way to make a battery with tabs that are strong and have low electrical resistance. The invention reduces the formation of non-coating areas and overlaps tab layers to increase their strength. This prevents the tabs from breaking and ensures reliable electrical connection and good bonding performance. The notching tab and electrode tab are bonded to the can member at the same time to ensure welding processability. Overall, this patent provides a more efficient and reliable way to make batteries.

Problems solved by technology

Thus, there is a problem that the battery capacity is lowered due to an increase of the non-coating portion.

Method used

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  • Secondary Battery And Method For Manufacturing The Same
  • Secondary Battery And Method For Manufacturing The Same
  • Secondary Battery And Method For Manufacturing The Same

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Embodiment Construction

[0048]Hereinafter, a secondary battery and a method for manufacturing the same according to exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0049]Terms or words used in the specification and claims should not be construed as limited to a lexical meaning, and should be understood as appropriate notions by the inventor based on that he / she is able to define terms to describe his / her invention in the best way to be seen by others. Therefore, embodiments and drawings described herein are simply exemplary and not exhaustive, and it will be understood that various equivalents may be made to take the place of the embodiments.

[0050]In the drawings, the dimension of each of components or a specific portion constituting the component is exaggerated, omitted, or schematically illustrated for convenience in description and clarity. Thus, the dimension of each element does not entirely reflect an actual size. Moreover, detail...

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Abstract

The present invention relates to a secondary battery in which an electrode tab is improved in mechanical strength and a method for manufacturing the same.Also, the secondary battery according to the present invention includes: an electrode provided with a coating portion coated with an active material on an electrode collector and a non-coating portion on which the active material is not applied to the electrode collector in a longitudinal direction of the electrode collector and a notching tab part extending from the coating portion in a width direction of the electrode collector without coating with the active material and overlapping each other to form two or more layers when the electrode is wound.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]The present application is a national phase entry under 35 U.S.C. § 371 of International Patent Application No. PCT / KR2018 / 004366, filed on Apr. 13, 2018, published in Korean, which claims priority from Korean Patent Application Nos. 10-2017-0048645, filed on Apr. 14, 2017, and 10-2018-0043191, filed on Apr. 13, 2018, the disclosures of which are hereby incorporated herein by reference in their entireties.TECHNICAL FIELD[0002]The present invention relates to a secondary battery and a method for manufacturing the same, and more particularly, to a secondary battery in which an electrode tab increases in mechanical strength and a method for manufacturing the same.BACKGROUND ART[0003]Batteries (cells) that generate electric energy through physical or chemical reaction to supply the generated electric energy to the outside are used when AC power to be supplied to the building is not obtained, or DC power is required according to the living envi...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H01M2/26H01M10/04H01M4/04H01M4/13H01M4/139H01M10/0587H01M50/536H01M50/538
CPCH01M10/0422H01M2/263H01M10/0431H01M10/0587H01M10/4235Y02E60/10H01M50/538Y02P70/50H01M50/536
Inventor KIM, JAE WOONGKIM, HYOUNG KWONKIM, SANG UCK
Owner LG ENERGY SOLUTION LTD
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